conditional formatting and not empty feature for a field

Hi ragic member,
I am here to ask regarding the issue that i faced over the mobile apps.

In this sheet,
I create a subtable with the 3 field (student, attendance and reason of absent)
student name is selection type (A,B,C)
attendance is selection type (present, absent)
reason of absent is free text

reason of absent is only appeared when the attendance is absent.
student name is compulsory field (i ticked the not empty box)
attendance is compulsory field (i ticked the not empty box)
reason of absent is compulsory field (i ticked the not empty box)
okay.

over the web raigc,
i tested and it works well.

but over the ragic mobile,
i cannot save any entry.

i suspect this the issue of not empty and conditional formatting.
this is because, when i turn off the compulsory field for reason of absent, it becomes okay.

Hi,

We’ve replied you via email on 10/18 and we will keep you posted!

Thanks!
Phil